The concept is fine, but as with so many things, due to ambiguity and to corruption —not necessarily moral corruption, more a distortion—we have to be careful that when we use terms which mean something to a large segment of the population which is very different from what they mean to us, that we clarify and make sure that our meaning is understood.
It’s like the word ‘prayer’. To a large majority of Protestant Christians the word ‘prayer’ means, “communication with GOD ALONE”.
To a majority of Catholic Christians, the word prayer means (as it has from the time of the apostles and from the Jews before them, “communication” itself, whether in the form of praise, thanksgiving, request for information, etc.)
When Shakespeare had a character say to another, “Prithee sir where are you going”, the word Prithee meant “Pray Thee” and the actual meaning of the word was, “I ask you” or ‘tell me”.
Similarly ‘worship’ was rooted in ‘worth ship’ or ‘the quality of worth in a person’ and that continues as the Catholic understanding, while the majority of Protestants take it to mean, “What is offered to God alone.”
Words matter and meaning matters.
I have no problem at all speaking metaphorically of Mother Earth; nor do I have a problem speaking of prayer or worship; all of these things are legitimate concepts and familiar in Christian terms. . .
But there is a fundamental (no pun intended) difference in the way that large groups of people define all these words and concepts, so when I use them, I make sure that i include the meaning as is understood by Catholics (as held through the ages; I’m well aware that a minority of Catholics over the last centuries, especially in the last few decades, have wanted to be more ‘ecumenical’. And I’m not against ecumenism either. I certainly want Christians to come to the fullness of truth and be as One. I’m just saying that it seems more likely that if as Catholics we believe that we hold the fullness of truth that the way to be ecumenical to Protestants (and others) is to bring them closer to the fullness we have, not back away from our fullness to a ‘less full’ understanding and say, “Well yeah it’s not quite full but if we back off and accept their definition we will be one’. not QUITE the way to fullness, that!